JPH04132276U - breather valve - Google Patents

breather valve

Info

Publication number
JPH04132276U
JPH04132276U JP1991038562U JP3856291U JPH04132276U JP H04132276 U JPH04132276 U JP H04132276U JP 1991038562 U JP1991038562 U JP 1991038562U JP 3856291 U JP3856291 U JP 3856291U JP H04132276 U JPH04132276 U JP H04132276U
Authority
JP
Japan
Prior art keywords
valve body
container
discharge port
pressure
supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1991038562U
Other languages
Japanese (ja)
Other versions
JPH075335Y2 (en
Inventor
道生 高阪
Original Assignee
大洋技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大洋技研工業株式会社 filed Critical 大洋技研工業株式会社
Priority to JP3856291U priority Critical patent/JPH075335Y2/en
Priority to US07/888,194 priority patent/US5188140A/en
Publication of JPH04132276U publication Critical patent/JPH04132276U/en
Application granted granted Critical
Publication of JPH075335Y2 publication Critical patent/JPH075335Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
    • F16K15/1472—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form the closure elements being fixed onto an internally extending mount
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03519—Valve arrangements in the vent line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F16K17/196—Equalising valves predominantly for tanks spring-loaded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • Y10T137/0379—By fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/788—Having expansible port
    • Y10T137/7882—Having exit lip

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Safety Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

(57)【要約】 【目的】構造が簡単で、小型のブリーザバルブを得る。 【構成】ブリーザ通路２に接続した摺動孔８に、弁体１
２を摺動可能に嵌挿すると共に、弁体１２を密閉容器１
側に付勢するばねを設け、かつ、弁体１２に、密閉容器
１に向かってすぼめた弾性部１８を形成する。そして、
弾性部１８の先端１８ｃに、密閉容器１内の圧力低下に
基づく弾性変形により開口可能な給排口２０を形成して
ブリーザ通路２を開閉可能とする。また、反密閉容器１
側から給排口２０に向かって突出され、密閉容器１内の
圧力上昇によりばね２４の付勢力に抗して摺動した弁体
１２の給排口２０に挿入されて開口させる針部材２６を
備えた。 (57) [Summary] [Purpose] To obtain a small-sized breather valve with a simple structure. [Configuration] The valve body 1 is inserted into the sliding hole 8 connected to the breather passage 2.
2 into the closed container 1, and the valve body 12 is slidably inserted into the closed container 1.
A spring biasing the valve body 12 is provided with an elastic portion 18 that is narrowed toward the closed container 1. and,
A supply/discharge port 20 is formed at the tip 18c of the elastic portion 18, which can be opened by elastic deformation based on a pressure drop in the closed container 1, so that the breather passage 2 can be opened and closed. Also, anti-airtight container 1
A needle member 26 is inserted into and opens the supply/discharge port 20 of the valve body 12 which is projected from the side toward the supply/discharge port 20 and slid against the biasing force of the spring 24 due to the pressure increase in the closed container 1. Prepared.

Description

【考案の詳細な説明】[Detailed explanation of the idea]

【０００１】0001

【産業上の利用分野】[Industrial application field]

本考案は、燃料タンク等の密閉容器内の圧力変化に応じて開閉弁して、密閉容 器内の圧力を調節するブリーザバルブに関する。 This invention opens and closes the valve in response to pressure changes inside the hermetic container, such as a fuel tank. This invention relates to a breather valve that adjusts the pressure inside a container.

【０００２】0002

【従来の技術】[Conventional technology]

従来より、自動二輪車や船外機に用いられる燃料タンク等の密閉容器は、燃料 の消費や温度の変化による燃料蒸気分圧の増加により、密閉容器内の圧力が変化 する。この圧力変化による密閉容器の変形、損傷を防止するために、実開昭６１ −１０８５７３号公報にあるように、小孔を介して大気と連通するものが知られ ている。 Traditionally, airtight containers such as fuel tanks used in motorcycles and outboard motors have been used to store fuel. The pressure inside the closed container changes due to an increase in fuel vapor partial pressure due to consumption of fuel or changes in temperature. do. In order to prevent deformation and damage to the sealed container due to this pressure change, - As stated in Publication No. 108573, there are known ones that communicate with the atmosphere through small holes. ing.

【０００３】 また、燃料タンク内のガソリン蒸気をそのまま大気に放出するのを防止するた めに、実公昭６０−３４８５０号公報にあるように、燃料タンクとガソリン蒸気 を吸着する活性炭等が封入された吸着容器とをブリーザ通路で連通し、このブリ ーザ通路にブリーザバルブを介装したものが知られている。このブリーザバルブ は、燃料タンク内が負圧になると、バルブ体が第１のばねに抗して移動して、燃 料タンクと吸着容器とを連通し、吸着容器を介して大気を燃料タンク内に吸入す る。そして、燃料タンク内の燃料蒸気圧が上昇すると、ダイヤフラムが第２のば ねに抗して移動して、レバーがバルブ体に接触し、バルブ体を押圧して、ショル ダ部から離間させ、燃料タンクと吸着容器を連通し、燃料タンク内のガソリン蒸 気を吸着容器に排出するものである。0003 Also, in order to prevent the gasoline vapor in the fuel tank from being released directly into the atmosphere, As stated in Japanese Utility Model Publication No. 60-34850, the fuel tank and gasoline vapor A breather passage communicates with an adsorption container filled with activated carbon, etc. that adsorbs A device in which a breather valve is installed in the laser passage is known. This breather valve When the inside of the fuel tank becomes negative pressure, the valve body moves against the first spring and the fuel is turned off. The fuel tank and adsorption container are communicated, and atmospheric air is sucked into the fuel tank through the adsorption container. Ru. Then, when the fuel vapor pressure in the fuel tank increases, the diaphragm opens to the second valve. The lever contacts the valve body, presses the valve body, and releases the shoulder. The fuel tank and adsorption container are connected to each other, and the gasoline vapor in the fuel tank is separated from the adsorption container. The air is discharged into an adsorption container.

【０００４】0004

【考案が解決しようとする課題】[Problem that the idea aims to solve]

しかしながら、こうした従来のものでは、複数のばねを必要とし、またダイヤ フラム、バルブ体、レバー等が必要であり、部品点数が多く、構造が複雑であっ た。また、ダイヤフラムを用いているために、バルブ全体の形状が大きく、自動 二輪車や船外機等に用いる場合には、取付が容易でないという問題があった。 However, these conventional devices require multiple springs and It requires a flam, a valve body, a lever, etc., and has a large number of parts and a complex structure. Ta. In addition, because a diaphragm is used, the overall shape of the valve is large and automatic When used in motorcycles, outboard motors, etc., there is a problem in that it is not easy to install.

【０００５】 そこで本考案は上記の課題を解決することを目的とし、構造が簡単で、小型の ブリーザバルブを提供することにある。[0005] Therefore, the purpose of this invention is to solve the above problems. Our objective is to provide a breather valve.

【０００６】[0006]

【課題を解決するための手段】[Means to solve the problem]

かかる目的を達成すべく、本考案は課題を解決するための手段として次の構成 を取った。即ち、 密閉容器に連通したブリーザ通路に接続され、前記密閉容器内の圧力変化に応 じて開閉弁して、前記密閉容器内の圧力を調節するブリーザバルブにおいて、 前記ブリーザ通路に接続した摺動孔に、弁体を摺動可能に嵌挿すると共に、前 記弁体を前記密閉容器側に付勢するばねを設け、 かつ、該弁体に、前記密閉容器に向かってすぼめた弾性部を形成し、該弾性部 の先端に、前記密閉容器内の圧力低下に基づく弾性変形により開口可能な給排口 を形成して前記ブリーザ通路を開閉可能とすると共に、 反密閉容器側から前記給排口に向かって突出され、前記密閉容器内の圧力上昇 により前記ばねの付勢力に抗して摺動した前記弁体の前記給排口に挿入されて開 口させる針部材を備えたことを特徴とするブリーザバルブの構成がそれである。 In order to achieve this purpose, this invention has the following configuration as a means to solve the problem. I took it. That is, It is connected to a breather passage communicating with the sealed container and responds to pressure changes within the sealed container. A breather valve that adjusts the pressure inside the closed container by opening and closing the valve at the same time, A valve body is slidably inserted into the sliding hole connected to the breather passage, and the front Providing a spring that biases the valve body toward the closed container, and an elastic portion that is narrowed toward the closed container is formed on the valve body, and the elastic portion At the tip of the airtight container, there is a supply/discharge port that can be opened by elastic deformation based on the pressure drop in the sealed container. to enable the breather passage to be opened and closed, Projected from the opposite side of the sealed container toward the supply/discharge port, increasing the pressure inside the sealed container. The valve body is inserted into the supply/discharge port of the valve body, which is slid against the biasing force of the spring, and opened. This is the configuration of a breather valve characterized by being provided with a needle member to be opened.

【０００７】[0007]

【作用】[Effect]

前記構成を有するブリーザバルブにおいては、密閉容器内と外部との圧力差が 小さいと、弾性部先端の給排口は閉じた状態で、ブリーザ通路と外部との連通を 遮断する。そして、密閉容器内の圧力が低下し、外部との圧力差が大きくなると 、弁体の弾性部が、弾性変形して、給排口が開口し、ブリーザ通路を介して密閉 容器内と外部とを連通し、密閉容器内との圧力差が大きくならないように調節す る。 In the breather valve having the above configuration, the pressure difference between the inside and outside of the closed container is If it is small, the supply/discharge port at the tip of the elastic part will remain closed, preventing communication between the breather passage and the outside. Cut off. When the pressure inside the sealed container decreases and the pressure difference with the outside increases, , the elastic part of the valve body elastically deforms, the supply/discharge port opens, and is sealed via the breather passage. Connect the inside of the container to the outside and adjust the pressure so that the difference in pressure between the inside and the closed container does not become large. Ru.

【０００８】 また、密閉容器内の圧力が上昇し、圧力差が大きくなると、弁体が、ばねの付 勢力に抗して、圧力差に応じて針部材に向かって摺動する。所定圧力差以上にな ると、針部材が給排口に進入し、給排口を開口させて、密閉容器と外部とを連通 し、密閉容器内との圧力差が大きくならないように調節する。[0008] Also, when the pressure inside the sealed container increases and the pressure difference becomes large, the valve body Resisting the force, it slides towards the needle member in response to the pressure difference. If the pressure difference exceeds the specified Then, the needle member enters the supply/discharge port, opens the supply/discharge port, and communicates the sealed container with the outside. Adjust the pressure so that the pressure difference with the inside of the closed container does not become large.

【０００９】[0009]

【実施例】【Example】

以下本考案の実施例を図面に基づいて詳細に説明する。 図１は本考案の一実施例であるブリーザバルブの断面図である。１は、燃料タ ンク等の密閉容器であり、この密閉容器１に、ブリーザ通路２の一端が連通され ており、ブリーザ通路２の他端には、円筒状の弁本体４に形成された連通孔６が 接続されている。この弁本体４は、本実施例では、自動二輪車の燃料切換コック の本体の一部として、コック本体と一体的に形成されている。 Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a sectional view of a breather valve that is an embodiment of the present invention. 1 is the fuel tank The airtight container 1 is an airtight container such as a tank, and one end of a breather passage 2 is communicated with the airtight container 1. At the other end of the breather passage 2, there is a communication hole 6 formed in the cylindrical valve body 4. It is connected. In this embodiment, this valve body 4 is a fuel switching cock of a motorcycle. It is formed integrally with the cock body as part of the body of the cock.

【００１０】 前記連通孔６に連接して摺動孔８が穿設されており、段部９を介して、摺動孔 ８に連接して摺動孔８より大径の貫通孔１０が形成されている。この摺動孔８に は、弁体１２の円筒部１４が摺動可能に嵌挿されており、弁体１２の円筒部１４ は、中空状にされている。この円筒部１４の貫通孔１０側には、貫通孔１０に挿 入可能な鍔部１６が一体的に形成されている。0010 A sliding hole 8 is bored in connection with the communication hole 6, and the sliding hole 8 is connected to the communicating hole 6 through a stepped portion 9. A through hole 10 having a larger diameter than the sliding hole 8 is formed in connection with the sliding hole 8 . In this sliding hole 8 The cylindrical portion 14 of the valve body 12 is slidably inserted into the cylindrical portion 14 of the valve body 12. is hollow. On the through hole 10 side of this cylindrical portion 14, there is a A retractable flange 16 is integrally formed.

【００１１】 また、鍔部１６と反対側の円筒部１４の端から、密閉容器１側に向かって弾性 部１８が延出されている。この弾性部１８は、その内部が中空で、本実施例では 、円筒部１４に連接した上平坦壁１８ａと、下平坦壁１８ｂとが、密閉容器１側 に向かって、次第にすぼめられて、その先端１８ｃで直線状に合わされている。 この上下平坦壁１８ａ，１８ｂが合わされて、先端１８ｃに給排口２０が形成さ れている。尚、本実施例では、弁体１２が、一体として、合成ゴム等の弾性体で 構成されている。[0011] Also, from the end of the cylindrical part 14 on the opposite side to the flange part 16, the elastic Section 18 is extended. This elastic portion 18 is hollow inside, and in this embodiment, , an upper flat wall 18a connected to the cylindrical portion 14 and a lower flat wall 18b are connected to the closed container 1 side. They are gradually narrowed toward each other and are aligned in a straight line at the tip 18c. The upper and lower flat walls 18a and 18b are brought together to form a supply/discharge port 20 at the tip 18c. It is. In this embodiment, the valve body 12 is made of an elastic body such as synthetic rubber. It is configured.

【００１２】 前記上下平坦壁１８ａ，１８ｂは、上下平坦壁１８ａ，１８ｂの内外両側の圧 力が、ほぼ等しいときには、給排口２０が閉じるように形成されている。また、 密閉容器１側の圧力が低く、その内外圧力差が５００ｍｍＡｑになると、上下平 坦壁１８ａ，１８ｂが弾性変形して離れ、給排口２０が開口するように形成され ている。0012 The upper and lower flat walls 18a, 18b are configured to maintain pressure on both the inner and outer sides of the upper and lower flat walls 18a, 18b. The supply/discharge port 20 is configured to close when the forces are approximately equal. Also, When the pressure on the closed container 1 side is low and the pressure difference between the inside and outside is 500 mmAq, the top and bottom are flat. The flat walls 18a and 18b are elastically deformed and separated to open the supply/discharge port 20. ing.

【００１３】 更に、貫通孔１０には、鍔部１６に続いて、ワッシャ２２が挿入され、このワ ッシャ２２に続いて、コイル状のばね２４が貫通孔１０に挿入されている。そし て、貫通孔１０には、針部材２６の円筒部２８が嵌着されて、弁本体４に固定さ れている。弁体１２は、ばね２４により付勢されて、鍔部１６が段部９に押し付 けられている。[0013] Furthermore, a washer 22 is inserted into the through hole 10 following the flange 16, and this washer 22 is inserted into the through hole 10 following the flange 16. Following the washer 22, a coiled spring 24 is inserted into the through hole 10. stop The cylindrical portion 28 of the needle member 26 is fitted into the through hole 10 and fixed to the valve body 4. It is. The valve body 12 is biased by the spring 24 so that the flange 16 is pressed against the stepped portion 9. I'm being kicked.

【００１４】 円筒部２８には、その内周から中心に向かって、４個のリブ３０（図２では３ 個のみ図示する。）が十字状に突出形成されており、そのリブ３０の先端に針部 ３２が円筒部２８の中心と一致する位置で支承されている。 この針部３２は、反密閉容器１側から弁体１２に向かって延出され、弁体１２ の円筒部１４内を挿通され、上下平坦壁１８ａ，１８ｂの間を通り、針部３２の 先端３２ａが、給排口２０の近傍まで延出されている。また、針部３２は、先端 ３２ａに向かって次第に細くなるようにされている。[0014] The cylindrical portion 28 has four ribs 30 (three ribs in FIG. 2) extending from the inner circumference toward the center. Only one item is shown. ) is formed protruding in the shape of a cross, and a needle portion is provided at the tip of the rib 30. 32 is supported at a position that coincides with the center of the cylindrical portion 28. This needle portion 32 extends toward the valve body 12 from the side opposite to the closed container 1, and It is inserted into the cylindrical part 14 of the needle part 32, passes between the upper and lower flat walls 18a and 18b, and The tip 32a extends to the vicinity of the supply/discharge port 20. Further, the needle portion 32 has a tip It is made to become gradually thinner toward 32a.

【００１５】 そして、密閉容器１側の圧力が高く、弁体１２の両側に圧力差が生じると、こ の圧力の作用を受けて、弁体１２が摺動し、所定圧力差になったときに、本実施 例では、０．２Kg/cm2 の圧力差が生じたときには、針部３２の先端３２ａが給 排口２０に挿入されて、上下平坦壁１８ａ，１８ｂを押し広げ、給排口２０を開 口するように、ばね２４の強さが設定されている。[0015] When the pressure on the closed container 1 side is high and a pressure difference occurs on both sides of the valve body 12, the valve body 12 slides under the action of this pressure, and when a predetermined pressure difference is reached, In this embodiment, when a pressure difference of 0.2 kg/cm 2 occurs, the tip 32a of the needle portion 32 is inserted into the supply/discharge port 20, and the upper and lower flat walls 18a, 18b are spread apart, causing the supply/discharge port 20 to open. The strength of the spring 24 is set so as to open the opening.

【００１６】 尚、弁本体４に図示しないホース等を挿着して、活性炭等が封入された吸着容 器に接続し、ガソリン蒸気を吸着させるようにしてもよい。密閉容器１内の内容 物が、大気に放出しても支障のないものであれば、ホース等を接続することなく 、針部材２６の円筒部２８内部が大気中に直接開放されていてもよい。[0016] In addition, by inserting a hose, etc. (not shown) into the valve body 4, an adsorption container filled with activated carbon, etc. It may also be connected to a container to absorb gasoline vapor. Contents of airtight container 1 If the material can be released into the atmosphere without any problem, it can be discharged without connecting a hose etc. , the inside of the cylindrical portion 28 of the needle member 26 may be directly exposed to the atmosphere.

【００１７】 次に、本実施例のブリーザバルブの作動について説明する。 まず、密閉容器１内の圧力が、外部の大気圧とほぼ等しい場合には、弾性部１ ８の上下平坦壁１８ａ，１８ｂの内外両側の圧力差はなく、給排口２０は、閉じ た状態を維持する。従って、弁体１２により摺動孔８が閉塞されるので、ブリー ザ通路２は、閉じられ、密閉容器１の密閉状態が保たれる。[0017] Next, the operation of the breather valve of this embodiment will be explained. First, when the pressure inside the closed container 1 is approximately equal to the external atmospheric pressure, the elastic part 1 There is no pressure difference between the inside and outside of the upper and lower flat walls 18a, 18b of 8, and the supply/discharge port 20 is closed. maintain the same condition. Therefore, since the sliding hole 8 is closed by the valve body 12, the valve body 12 closes the sliding hole 8. The passage 2 is closed, and the sealed container 1 is maintained in a sealed state.

【００１８】 そして、例えば、密閉容器１内の燃料が消費されて、圧力が低下すると、ブリ ーザ通路２、連通孔６、摺動孔８を介して、上下平坦壁１８ａ，１８ｂの外側に その圧力が作用する。一方、上下平坦壁１８ａ，１８ｂの内側には、針部材２６ の円筒部２８内部、貫通孔１０、弁体１２内部を介して、外部の圧力が、作用す る。[0018] For example, when the fuel in the sealed container 1 is consumed and the pressure decreases, the to the outside of the upper and lower flat walls 18a and 18b through the user passage 2, the communication hole 6, and the sliding hole 8. That pressure comes into play. On the other hand, a needle member 26 is provided inside the upper and lower flat walls 18a and 18b. External pressure acts through the inside of the cylindrical portion 28, the through hole 10, and the inside of the valve body 12. Ru.

【００１９】 上下平坦壁１８ａ，１８ｂの内外両側に圧力差が生じると、上下平坦壁１８ａ ，１８ｂは、密閉容器１側に向かってすぼめられているので、その圧力差に応じ て、弁体１２の弾性力に抗して、上下平坦壁１８ａ，１８ｂの間隔を広げるよう な作用力を受ける。上下平坦壁１８ａ，１８ｂの両側の圧力差が、所定圧力差、 本実施例では、５００ｍｍＡｑ以上となると、間隔が広がって、給排口２０が開 口する。[0019] When a pressure difference occurs between the inside and outside of the upper and lower flat walls 18a and 18b, the upper and lower flat walls 18a , 18b are narrowed toward the airtight container 1 side, so depending on the pressure difference, In order to resist the elastic force of the valve body 12, the gap between the upper and lower flat walls 18a and 18b is widened. subject to a force of action. The pressure difference on both sides of the upper and lower flat walls 18a and 18b is a predetermined pressure difference, In this embodiment, when the amount exceeds 500 mmAq, the gap widens and the supply/discharge port 20 opens. Speak.

【００２０】 すると、針部材２６の円筒部２８内部、貫通孔１０、弁体１２内部、給排口２ ０、摺動孔８、連通孔６、ブリーザ通路２を介して、密閉容器１と外部とが連通 され、外部から密閉容器１内に流体が導入される。これにより、密閉容器１内の 圧力が、外部よりも５００ｍｍＡｑ以上低くならないように、調節される。[0020] Then, the inside of the cylindrical part 28 of the needle member 26, the through hole 10, the inside of the valve body 12, the supply/discharge port 2 0, the closed container 1 communicates with the outside through the sliding hole 8, the communication hole 6, and the breather passage 2. Then, fluid is introduced into the closed container 1 from the outside. As a result, inside the airtight container 1 The pressure is adjusted so that it is no more than 500 mmAq lower than the outside.

【００２１】 尚、本実施例では、弾性部１８を合成ゴムで形成しているので、その弾性力を 小さなものとすることができるので、僅かな圧力差で給排口２０が開口するよう にできる。 また、密閉容器１内の圧力が上昇すると、例えば、密閉容器１の温度が上昇し て、ガソリン蒸気圧が上昇すると、ブリーザ通路２、連通孔６を介して、上下平 坦壁１８ａ，１８ｂの外側に、その圧力が作用する。従って、上下平坦壁１８ａ ，１８ｂの両側に圧力差が生じ、給排口２０は、圧力の作用を受けて、閉じる。[0021] In this embodiment, since the elastic part 18 is made of synthetic rubber, its elastic force is Since it can be made small, the supply/discharge port 20 can be opened with a slight pressure difference. Can be done. Furthermore, when the pressure inside the sealed container 1 increases, for example, the temperature of the sealed container 1 increases. When the gasoline vapor pressure rises, the gas flows through the breather passage 2 and the communication hole 6. The pressure acts on the outside of the flat walls 18a, 18b. Therefore, the upper and lower flat walls 18a , 18b, and the supply/discharge port 20 closes under the action of the pressure.

【００２２】 しかし、上下平坦壁１８ａ，１８ｂの内外両側の圧力差に応じて、弁体１２に は、摺動孔８の軸方向の作用力が働き、弁体１２は、ばね２４の付勢力に抗して 、給排口２０が針部３２の先端３２ａに接近するように摺動する。そして、その 圧力差が、所定圧力差、本実施例では、０．２Kg/cm2 となると、針部３２の先 端３２ａが、給排口２０に挿入され、上下平坦壁１８ａ，１８ｂが押し広げられ 、強制的に開口させる。However, depending on the pressure difference between the inner and outer sides of the upper and lower flat walls 18a and 18b, an acting force in the axial direction of the sliding hole 8 acts on the valve body 12, and the valve body 12 is moved by the biasing force of the spring 24. Against this, the supply/discharge port 20 slides toward the tip 32a of the needle portion 32. When the pressure difference becomes a predetermined pressure difference, in this example, 0.2 kg/cm 2 , the tip 32a of the needle part 32 is inserted into the supply/discharge port 20, and the upper and lower flat walls 18a, 18b are pushed apart. and forced to open.

【００２３】 これにより、密閉容器１内と、外部とが、連通されて、密閉容器１内のガソリ ン蒸気が、ブリーザ通路２、連通孔６、摺動孔８、弁体１２内部、貫通孔１０、 針部材２６の円筒部２８内部を通り、外部に排出される。吸着容器と接続されて いるときには、ガソリン蒸気が活性炭等に吸着され、ガソリン蒸気は大気中に放 出されることがない。[0023] As a result, the inside of the hermetic container 1 and the outside are communicated with each other, and the gas inside the hermetic container 1 is Steam flows through the breather passage 2, the communication hole 6, the sliding hole 8, the inside of the valve body 12, the through hole 10, It passes through the inside of the cylindrical portion 28 of the needle member 26 and is discharged to the outside. connected to adsorption container When fuel is present, gasoline vapor is adsorbed by activated carbon, etc., and gasoline vapor is released into the atmosphere. It is never served.

【００２４】 尚、本実施例では、密閉容器１が燃料タンクの場合を例としたが、密閉容器１ は、この場合に限らず、歯車が内蔵され、潤滑油が入れられた密閉を要するギヤ ボックスの場合でも、同様に実施可能である。 前述した如く、本実施例のブリーザバルブは、弾性を有する弾性部１８の先端 １８ｃに形成した給排口２０が、圧力が低下したときに、圧力差により開口して 、圧力を調節する。また、圧力が上昇すると、弁体１２がばね２４の付勢力に抗 して摺動し、針部材２６の針部３２が給排口２０に挿入されて、開口され、圧力 を調節する。[0024] In this embodiment, the case where the hermetic container 1 is a fuel tank is taken as an example, but the hermetic container 1 This is not limited to this case, but it also applies to gears that have built-in gears, contain lubricating oil, and need to be sealed. In the case of a box, the same implementation is possible. As mentioned above, in the breather valve of this embodiment, the tip of the elastic part 18 has elasticity. When the pressure decreases, the supply/discharge port 20 formed at 18c opens due to the pressure difference. , adjust the pressure. Furthermore, when the pressure increases, the valve body 12 resists the biasing force of the spring 24. The needle part 32 of the needle member 26 is inserted into the supply/discharge port 20 and opened, and the pressure is released. Adjust.

【００２５】 従って、密閉容器１側にすぼめた弾性部１８の先端１８ｃに給排口２０を形成 した簡単な構成で、密閉容器１の圧力が低くならないように調整できる。また、 弁体１２をばね２４の付勢力に抗して摺動して、針部３２により給排口２０を開 口する簡単な構成で、密閉容器１の圧力が高くなり過ぎないように調節する。よ って、簡単な構成で、かつ小型であって、密閉容器１内の圧力を適性に調節でき る。[0025] Therefore, a supply/discharge port 20 is formed at the tip 18c of the elastic portion 18 that is narrowed toward the closed container 1 side. With this simple configuration, the pressure in the closed container 1 can be adjusted so as not to become low. Also, The valve body 12 is slid against the biasing force of the spring 24, and the supply/discharge port 20 is opened by the needle portion 32. To adjust the pressure of a closed container 1 so that it does not become too high with a simple configuration that can be opened. Yo Therefore, it has a simple configuration and is small in size, and the pressure inside the sealed container 1 can be adjusted appropriately. Ru.

【００２６】 このように、簡単な構成で、かつ小型であり、しかも、摺動孔８、貫通孔１０ 内に一直線上に弁体１２、ばね２４、針部材２６を収納できるので、通路の途中 に介装する構成とすることも容易であり、自動二輪車や船外機等の燃料タンクに も容易に取り付けることができる。[0026] In this way, the structure is simple and small, and the sliding hole 8 and the through hole 10 are The valve body 12, spring 24, and needle member 26 can be housed in a straight line within the passage. It is also easy to configure it to be installed in the fuel tank of motorcycles, outboard motors, etc. can also be easily installed.

【００２７】 以上本考案はこの様な実施例に何等限定されるものではなく、本考案の要旨を 逸脱しない範囲において種々なる態様で実施し得る。[0027] The present invention is not limited to such embodiments in any way, and the gist of the present invention is described below. It may be implemented in various ways without departing from the scope.

【００２８】[0028]

【考案の効果】[Effect of the idea]

以上詳述したように本考案のブリーザバルブは、密閉容器側にすぼめた弾性部 の先端に給排口を有し、また、弁体をばねの付勢力に抗して摺動して、針部材に より給排口を開口するので、簡単な構成にでき、かつ小型にできると共に、通路 に介装する構成とすることも容易であり、取り付けが容易にできるという効果を 奏する。 As detailed above, the breather valve of the present invention has an elastic part that is narrowed toward the side of the closed container. It has a supply/discharge port at the tip of the valve, and the valve body slides against the biasing force of a spring to connect to the needle member. Since the supply and discharge ports are opened, the structure can be made simple and compact, and the passageway can be made smaller. It is also easy to configure the structure to be interposed between the play.

【図面の簡単な説明】[Brief explanation of drawings]

【図１】本考案の一実施例としてのブリーザバルブの断
面図である。FIG. 1 is a sectional view of a breather valve as an embodiment of the present invention.

【図２】本実施例のブリーザバルブの弁体、ばね、針部
材の斜視図である。FIG. 2 is a perspective view of the valve body, spring, and needle member of the breather valve of this embodiment.

【符号の説明】[Explanation of symbols]

１…密閉容器 ２…ブリーザ通路 ８…摺
動孔 １２…弁体 １８…弾性部 ２０…給
排口 ２４…ばね ２６…針部材 ３２…針
部1... Airtight container 2... Breather passage 8... Sliding hole 12... Valve body 18... Elastic part 20... Supply/discharge port 24... Spring 26... Needle member 32... Needle part

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 密閉容器に連通したブリーザ通路に接続
され、前記密閉容器内の圧力変化に応じて開閉弁して、
前記密閉容器内の圧力を調節するブリーザバルブにおい
て、前記ブリーザ通路に接続した摺動孔に、弁体を摺動
可能に嵌挿すると共に、前記弁体を前記密閉容器側に付
勢するばねを設け、かつ、該弁体に、前記密閉容器に向
かってすぼめた弾性部を形成し、該弾性部の先端に、前
記密閉容器内の圧力低下に基づく弾性変形により開口可
能な給排口を形成して前記ブリーザ通路を開閉可能とす
ると共に、反密閉容器側から前記給排口に向かって突出
され、前記密閉容器内の圧力上昇により前記ばねの付勢
力に抗して摺動した前記弁体の前記給排口に挿入されて
開口させる針部材を備えたことを特徴とするブリーザバ
ルブ。1. A valve connected to a breather passage communicating with a closed container, the valve opening and closing according to pressure changes within the closed container,
In the breather valve for regulating the pressure inside the closed container, a valve body is slidably inserted into a sliding hole connected to the breather passage, and a spring is provided to bias the valve body toward the closed container. and forming an elastic part on the valve body that narrows toward the sealed container, and forming a supply/discharge port that can be opened by elastic deformation based on a pressure drop in the sealed container at the tip of the elastic part. The valve body is configured to open and close the breather passage, and is protruded from the opposite side of the sealed container toward the supply/discharge port, and is slid against the biasing force of the spring due to an increase in pressure within the sealed container. A breather valve comprising a needle member that is inserted into and opens the supply/discharge port of the breather valve.
JP3856291U 1991-05-28 1991-05-28 Breather valve Expired - Lifetime JPH075335Y2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3856291U JPH075335Y2 (en) 1991-05-28 1991-05-28 Breather valve
US07/888,194 US5188140A (en) 1991-05-28 1992-05-25 Breather valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3856291U JPH075335Y2 (en) 1991-05-28 1991-05-28 Breather valve

Publications (2)

Publication Number Publication Date
JPH04132276U true JPH04132276U (en) 1992-12-07
JPH075335Y2 JPH075335Y2 (en) 1995-02-08

Family

ID=12528743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3856291U Expired - Lifetime JPH075335Y2 (en) 1991-05-28 1991-05-28 Breather valve

Country Status (2)

Country Link
US (1) US5188140A (en)
JP (1) JPH075335Y2 (en)

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JPH0742429U (en) * 1993-12-29 1995-08-04 川崎重工業株式会社 Breather mechanism for engine fuel tank
JP2002307958A (en) * 2001-04-10 2002-10-23 Keeper Co Ltd Breather seal
WO2017159355A1 (en) * 2016-03-18 2017-09-21 テルモ株式会社 Medical connector and infusion set

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US5188140A (en) 1993-02-23
JPH075335Y2 (en) 1995-02-08

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